Good morning Kaitlyn,
Good question. Is it just a few activities or areas within the course, or is it many areas or the entirety of the course that is not receiving updates? If it's just a small number of areas impacted in the course, one of your administrators (or we as Agilix support) could attempt to modify that through the API. I would recommend you reach out to your authorized support representatives to create a ticket for Agilix Support to address relinking a small number of areas of your course (if you want us to explore relinking those small areas).
Alternatively, if it's a large number of areas or the entire course that isn't receiving updates, we would recommend you create a new child course from the base course.